Hair Conditioning
GLYOXYLOYL KERATIN AMINO ACIDS
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A keratin amino acid derivative reacted with glyoxylic acid, used in heat-activated hair-smoothing treatments. Marketed as a formaldehyde alternative, but glyoxylic acid itself raises inhalation/release concerns under heat.
Function
Skin benefits
- Hair-rebonding action for straightening/smoothing
- Replaces formaldehyde-based smoothing chemistry
- Conditions damaged hair
Known concerns
- Glyoxylic acid releases formaldehyde-class aldehydes under heat
- Inhalation/eye exposure during salon application
- SCCS opinion on glyoxylic acid recommends concentration limits
- Salon-only typically due to handling risks
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related hair conditionings
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.